Havel's Market (Havelský trh), on Havelská ulice, a short street running perpendicular to the main route connecting Staromestské námestí with Václavské námestí, is a great open-air place to shop for picnic supplies. Here you'll find seasonal homegrown fruits and vegetables at inexpensive prices. Vysehrad is my family's favorite place for a picnic. The market is open Monday to Friday from 8am to 6pm.

Hradcany

The Royal Garden (Královská zahrada) at Prague Castle, Praha 1, once the site of the sovereigns' vineyards, was founded in 1534. Dotted with lemon trees and surrounded by 16th-, 17th-, and 18th-century buildings, the park is consciously and conservatively laid out with abundant shrubbery and fountains. Entered from U Prasného mostu Street, north of the castle complex, it's open daily from 10am to 6pm.

The castle's Garden on the Ramparts (Zahrada na Valech) is on the city-side hill below the castle. Beyond beautifully groomed lawns and sparse shrubbery is a tranquil low-angle view of the castle above and the city below. Enter the garden from the south side of the castle complex, below Hradcanské námestí. The garden is open Tuesday to Sunday from 10am to 6pm.

In 2000, Prince Charles himself was present when the gardens under Prague Castle towards Malá Strana were reopened after years of cleaning and reconstruction. Ledeburská, Pálffyovská, Kolowratská, and Malá Furstenberská are open daily from 10am to 6pm.

Malá Strana

Looming over Malá Strana, adjacent to Prague Castle, lush green Petrín Hill (Petrínské sady) is easily recognizable by the miniature replica of the Eiffel Tower that tops it . Gardens and orchards bloom in spring and summer. Throughout the myriad monuments and churches are a mirror maze and an observatory . The Hunger Wall, a decaying 6m (21-ft.) high stone wall that runs up through Petrín to the grounds of Prague Castle, was commissioned by Charles IV in the 1360s as a medieval welfare project designed to provide jobs for Prague's starving poor. Take tram no. 12, 22, or 23 to Újezd.

On Petrín's steep slope, near Malostranské námestí, is located Vrtbovská zahrada, Karmelitská 25, Praha 1 (tel. 257-531-480; www.vrtbovska.cz). This is supposed to be the most beautiful terraced garden north of the Alps. It was built in the 18th century's baroque style by architect Kanka, and Matyas Braun provided some of his sculptures. This very special site was totally neglected during the old regime (it partially served as a playground for a local nursery). Its now relaxing atmosphere has been enjoyed for only a couple of years since then. The garden is open daily April to October from 10am to 6pm. Take tram no. 12, 22, or 23 to Malostranské námesti.

Near the foot of Charles Bridge in Malá Strana, Kampa Park (Na Kampe) was named by Spanish soldiers who set up camp here after the Roman Catholics won the Battle of White Mountain in 1620. The park as it is today wasn't formed until the Nazi occupation, when the private gardens of three noble families were joined. It's a fine place for an inner-city picnic, though the lawns are packed in high season.

Part of the excitement of Waldstein (Wallenstein) Gardens (Valdstejnská zahrada) is its location, behind a 9m (30-ft.) wall on the back streets of Malá Strana. Inside, elegant gravel paths dotted with classical bronze statues and gurgling fountains fan out in every direction. Laid out in the 17th century, the baroque park was the garden of Gen. Albrecht Waldstein (or Wallenstein; 1581-1634), commander of the Roman Catholic armies during the Thirty Years' War. These gardens are the backyards of Waldstein's Palace -- Prague's largest -- which replaced 23 houses, three gardens, and the municipal brick kiln. The gardens are open May to September, daily from 9am to 7pm.

Elsewhere in Prague

The plain above the western side of the Vltava north of Prague Castle is a densely tree-covered swath, maintained as a park since 1858. Letná Park (Letenské sady) provides many quiet spaces for a picnic, and a summer beer garden at the north end serves up brew with a view. The garden is connected to two restaurants in a recently renewed, 19th-century, neo-Renaissance château (Letenský zámecek), where you can get a pub-style meal or formal dinner. Take tram no. 1, 8, 25, or 26 from Hradcanská metro station. Farther north is the massive nature reserve Stromovka (metro: Nádrazí Holesovice, then tram no. 5 or 17). Acres of densely tree-lined paths, mostly flat and paved, comprise a shaded set of corridors for long strolls, jogging, and even in-line skating.

My favorite inner-city getaway is Vysehrad Park above the Vltava south of the city center. This 1,000-year-old citadel encloses a peaceful set of gardens, playgrounds, footpaths, and the national cemetery next to the twin-towered Church of Sts. Peter and Paul, reconstructed from 1885 to 1887. The park provides a fantastic wide-angle view of the whole city. Take metro line C to Vysehrad or tram no. 3 or 17 to Výton. The park is open at all times.